CVE-2021-34585 HIGH

CVE-2021-34585: CODESYS V2 web server: crafted requests could trigger a pointer dereference with an invalid address (DoS)

Vendor Codesys
Product CODESYS V2
Weakness CWE-252
Published October 26, 2021
Last update September 16, 2024
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality None
Integrity None

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

What the vulnerability does

01Description

In the CODESYS V2 web server prior to V1.1.9.22 crafted web server requests can trigger a parser error. Since the parser result is not checked under all conditions, a pointer dereference with an invalid address can occur. This leads to a denial of service situation.

Key dates

02Disclosure timeline

October 26, 2021 CVE published
September 16, 2024 Record updated